CN1683984A

CN1683984A - Lens barrel and imaging equipment

Info

Publication number: CN1683984A
Application number: CNA2005100652754A
Authority: CN
Inventors: 白方圣; 东条宏昭
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 2004-04-15
Filing date: 2005-04-15
Publication date: 2005-10-19
Anticipated expiration: 2025-04-15
Also published as: EP1586928A3; US20050265710A1; EP1586928A2; US7309176B2; CN100451812C; JP4120940B2; KR20060045611A; JP2005301158A

Abstract

A lens barrel including a base and a collapsible barrel provided so as to collapse into and expand out of the base, the barrel including a lens constituting an image-capturing optical system for introducing an image of an object, a lens frame for holding the lens, and an operational unit provided in the lens frame for performing an operation relating to image capture based on a control signal supplied thereto, the lens barrel including a flexible substrate provided within the lens barrel for supplying the control signal from an electric circuit provided outside the barrel to the operational unit; wherein the flexible substrate has a first interconnect section to which the control signal is supplied; and a second interconnect section provided separately from the first interconnect section and having an end connected onto the lens frame and another end electrically connected to a ground potential.

Description

Lens barrel and imaging device

The cross reference of related application

The priority documents JP2004-120796 that this document was submitted to Jap.P. office based on April 15th, 2004, its content is hereby incorporated by.

Technical field

The present invention relates to a kind of lens barrel and a kind of imaging device.

Background technology

When constituting as the shell of the outer cover of the imaging device of digital camera and Digital Video and so on when static charge and static discharge take place, electric current will flow into and pass in the circuit that enclosure provides, and the operation of the electronic unit of circuit and forming circuit is caused negative effect.

Known have a technology that conductive member therefore is provided in equipment, wherein conductive member is connected to the shell of imaging device and has earthy part in the circuit in (for example referring to Japanese Laid-Open Patent Application No.2003-315888 Patent Office communique).

Summary of the invention

Had imaging device with telescopic type lens barrel, wherein the telescopic type lens barrel can the retraction shell in stretch out from shell.Be used for keeping the mirror holder of lens to be set at lens barrel.Operating unit according to the control signal operation that feeds to this mirror holder is arranged at wherein.In addition, be used for providing the flexible substrate of control signal to place lens barrel to operating unit from being arranged at the lens barrel circuit external.

The danger that exists is, under the situation that the lens barrel in this imaging device stretches out forward from shell, in when, in the lens barrel static charge or static discharge taking place, because the electric current that electric charge or discharge cause can flow into the flexible substrate from lens barrel by atmospherical discharges, and be transferred into circuit, thereby may cause negative effect to the operation of the electronic unit of circuit and forming circuit by flexible substrate.

And, in recent years, realized the miniaturization of lens barrel, so the distance between lens barrel and the flexible substrate just becomes narrower, thereby be convenient to electrostatic current and transfer to flexible substrate.

In light of this situation, just considered the present invention.A preferred embodiment of the present invention provides a kind of lens barrel and a kind of imaging device, and it can prevent effectively because the caused negative effect of electrostatic current is opened and helped its miniaturization.

According to a preferred embodiment of the invention, a kind of lens barrel preferably is provided, it comprises pedestal and can reach the extension type tube that stretches out from pedestal by the retraction pedestal, tube comprises lens, lens constituted the image that is used for introducing object the picture catching optical system, be used to keep the mirror holder of lens and be arranged at mirror holder be used for according to the control signal of confession carry out the operating unit of the operation relevant with picture catching, lens barrel has and is arranged at being used in the lens barrel and provides the flexible substrate of control signal to operating unit from being arranged at a circuit external; Wherein flexible substrate comprises the first interconnection section, and control signal feeds to this first interconnection section; And the second interconnection section, this second interconnection section and first interconnection section separate to be provided and an end is connected on the mirror holder and the other end is electrically connected on the earth potential.

In addition, according to a further advantageous embodiment of the invention, provide a kind of imaging device, it comprises pedestal and can reach the extension type tube that stretches out from pedestal by the retraction pedestal, tube comprises that lens, lens have constituted the picture catching optical system that is used to introduce the object optical imagery; Be used for to object carry out imaging imaging device, be used to keep the mirror holder of lens and be arranged at mirror holder be used for according to the control signal of confession carry out the operating unit of the operation relevant with picture catching, imaging device has and is arranged at being used in the lens barrel and provides the flexible substrate of control signal to operating unit from being arranged at a circuit external; Wherein flexible substrate comprises the first interconnection section, and control signal feeds to this first interconnection section; And the second interconnection section, this second interconnection section and first interconnection section separate to be provided and an end is connected on the mirror holder and the other end is electrically connected on the earth potential.

According to a preferred embodiment of the invention, during being in the state of stretching out at lens barrel because external static electrification or electric current and at the place, end of lens barrel or when in its vicinity discharge or electric charge taking place, this electric current is caused by the second interconnection section has earthy part.

Therefore, electric current does not flow in the circuit and imaging device of imaging device.Like this, just can prevent safely that electric current from causing negative effect or the electronic unit of circuit and imaging device is caused negative effect the operation of circuit and imaging device.

In addition, even under the narrow situation of the distance between lens barrel and the flexible substrate, also can have earthy part and prevent those negative effects safely by steadily electrostatic current being caused.Therefore, the preferred embodiments of the present invention help the miniaturization of lens barrel and imaging device.

By having the interconnection section of second on earthy part placing to provide on the flexible substrate of lens barrel to be connected in, can realize effectively preventing because of the caused negative effect of electrostatic current.

Description of drawings

By consulting in conjunction with the accompanying drawings the following description that current preferred illustrative embodiment of the present invention carried out, it is clearer that above and other objects of the present invention, feature and advantage will become, wherein:

Fig. 1 is the skeleton view as the imaging device of an example of the preferred embodiment of the present invention;

Fig. 2 shows the calcspar as the imaging device configuration of an example of the preferred embodiment of the present invention;

Fig. 3 (A) and 3 (B) show the skeleton view of the situation of lens barrel 10;

Fig. 4 (A) shows the cut-open view of the situation of lens barrel 10 to 4 (C);

Fig. 5 shows the exploded perspective illustration of extension type lens;

Fig. 6 is the development figure of set collar 20;

Fig. 7 is the development figure of cam ring 24;

Fig. 8 shows the skeleton view of schematic configuration separately of the first arrangement of mirrors frame 1402 and the second arrangement of mirrors frame 1602;

Fig. 9 is the longitudinal sectional view of lens barrel 10;

Figure 10 is the explanatory of automatic exposure equipment 1610 and flexible substrate 1612;

Figure 11 shows the explanatory of the electrical connection in the imaging device 100; And

Figure 12 shows the explanatory of the electrical connection in the imaging device 100, and wherein imaging device 100 is not arranged at the interconnection of second on the flexible substrate 1612 section 1612B.

Embodiment

Next, hereinafter will be described by an example to the preferred embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 is the skeleton view according to the imaging device of an example of the preferred embodiment of the present invention.Fig. 2 shows the calcspar according to the imaging device configuration of an example of the preferred embodiment of the present invention.

As shown in fig. 1, the imaging device 100 that constitutes this example of preferred embodiment is the digital camera with shell 102, and shell 102 has constituted its outer cover or main body.

Be used to hold and keep the extension type lens barrel 10 of picture catching optical system 104 to be arranged at the right positions place in shell 102 fronts.The object lens 108 of flash of light section 106 and optical finder 40 are arranged at shell 102 front upper positions (referring to Fig. 5).

Lens barrel 10 is configured to can be so that lens barrel moves between the use location of stretching out forward from the front of shell 102 (corresponding with the intermediateness between extensive angle state, flexible state and extensive angle state and the flexible state) and lens barrel 10 are contained in accommodated position (and contraction state is corresponding) shell 102 fronts (referring to Fig. 2) by the driving section 124 that is included in the shell 102.

Shutter release button 110 is arranged at shell 102 end faces.The eyepiece window (not shown) of optical finder, be used to carry out a plurality of operating switchs 112, and be used to show that the display 114 (referring to Fig. 2) of photographs is arranged at the back side of shell 102 as the various operations of the ON/OFF of power supply and the conversion between picture catching pattern and the replication mode and so on.

As shown in Figure 2, the imaging device 116 that is made of CCD and cmos sensor that is used for the object electronic imaging is placed in the back portion of lens barrel 10, and wherein the optical imagery of object forms by picture catching optical system 104.Imaging device 100 has and is used for producing view data and imaging data being recorded in the image processor 120 of storage medium 118 according to the imaging signal from imaging device 116 output, also have in addition and be used for, so that in response to operating switch 112 and shutter release button 110 performed operations and control image processor 120, video-stream processor 122 and driver 124 at video-stream processor 122, the driver 124 of display 114 display image datas and the controller 126 that comprises CPU.

Next, hereinafter will be described for the profile of lens barrel 10 configurations.

Fig. 3 (A) and 3 (B) are the skeleton views that shows the lens barrel situation separately.Fig. 3 (A) shows lens and holds state, does not promptly wherein use the contraction state of lens.3 (B) show the lens that wherein use lens and stretch out state (in other words being extensive angle state and flexible state).Fig. 4 (A) to 4 (C) be the cut-open view of lens barrel 10.Fig. 4 (A) shows its contraction state.Fig. 4 (B) shows its extensive angle state, and Fig. 4 (C) shows its flexible state.Fig. 5 shows the exploded perspective illustration of lens barrel 10.

As shown in Fig. 3 (A) and 3 (B), lens barrel 10 is connected on the pedestal 12 that is fixed on the shell 102.

To as shown in 4 (C), lens barrel 10 optically has three groups of configurations as Fig. 4 (A).In other words, suppose that the object side on the optical axis direction of lens barrel 10 is the front side, and imaging device 116 sides on its optical axis direction are rear side, constitute three groups of lens barrel 10 so and comprise first group of lens settling according to the order of the past side direction rear side 14, second group of lens 16 and the 3rd group of lens 18.

Thereby first group of lens 14 of lens barrel 10 and second group of lens 16 are activated on the direction of its optical axis along predetermined cam curve and carry out convergent-divergent.Thereby the 3rd group of lens 18 of lens barrel 10 carry out atomic little moving on the direction of its optical axis focuses.In other words, lens drum is arranged such that moving of each can cause focal length variations in first group of lens 14 and the second group of lens 16, thereby and realizes suitably focusing because of the deviation of the focal position due to this variation of focal length can obtain proofreading and correct by moving of the 3rd group of lens 18.

As shown in Figure 5, in lens barrel 10, set collar 20, swivel becket 22, cam ring 24 (corresponding with first lens drum described in the claim) and straight-line guidance ring 26 are as move first group of lens 14 and second group of lens 16 component utilized on its optical axis direction.External thread member and inner threaded member are as move the 3rd group of lens 18 component utilized on its optical axis direction.

This example of the preferred embodiment of the present invention have be positioned at first group of lens 14 front portion be used to open the tube mechanism 30 of catching optical system light path with closing image.

More specifically, set collar 20 is fixed on the pedestal 12.As shown in Figure 6, the cam path 2002 that along the circumferential direction extends and 2004 and be parallel to the straight-line guidance groove 2006 that the optical axis direction of picture catching optical system extends and be arranged in the interior perimeter surface of set collar 20.

Swivel becket 22 is arranged in the outer surface of set collar 20 rotationally so that make it to move on optical axis direction.

The cam path 2202 that provides a plurality of interior perimeter surface that penetrate swivel becket 22 and outer surface in the swivel becket 22 and extend along its circumferencial direction.Be arranged in the interior perimeter surface of swivel becket 22 along the linearly extended straight-line groove 2205 of optical axis direction.Gear segment 2204 is formed in the outer surface rear portion of swivel becket 22 so that have predetermined length on its circumferencial direction.A plurality of fins 2206 that are used to detect the turned position are arranged on the rear end of swivel becket 22 so that stretch out thus.

Gear segment 2204 and gear 2302 engagements that are connected the swivel becket driving mechanism 23 on the pedestal 12.Rotating drive power from swivel becket driving mechanism 232 is supplied to swivel becket 22 by gear 2302 and gear segment 2204, thereby swivel becket 22 is activated so that rotate around its optical axis.

Swivel becket driving mechanism 23 has the d.c. motor that is used for rotational driving gear 2302, is used to calculate the rotary encoder of this d.c. motor or gear 2302 revolutions, and the optical sensor that is used to detect fin 2206 motion conditions.Detection signal according to rotary encoder and optical sensor can be controlled the rotating speed and the turned position of swivel becket 22.

The 3rd group of lens 18 keep by the 3rd arrangement of mirrors frame 1802, and mirror holder 1802 places on the pedestal 12 and by guiding mechanism 28 and keeps rotating so that move on its optical axis direction and can not center on its optical axis.The 3rd arrangement of mirrors frame 1802 is configured to carry out atomicly moving on optical axis direction by driving mechanism 29 littlely.

Cam ring 24 is arranged in the inner radial of set collar 20 so that around its optical axis rotation with

move.Cam path

2402 and 2404 is arranged in the interior perimeter surface of cam ring 24, as shown in Figure 7.Three radially outwardly directed nose sections 2406 are arranged on the rear end of cam ring 24 so that separate on its circumferencial direction, as shown in Figure 5.In addition, between the

cam path

2002 and 2004 joint aging times of these three nose sections 2406 and set collar 20, cam ring 24 rotates with respect to set collar 20, thereby these three nose sections 2406 move along cam path 2002 and 2004.Therefore, cam ring 24 moves on its optical axis direction.

And the cam path 2002 of at least one set collar 20 penetrates set collar 20.Engage with the straight-line groove 2205 of swivel becket 22 by cam path 2002 with an end of the arm (not shown) of cam path 2002 corresponding setting that penetrate it on cam ring 24 outshots 2406.Therefore, cam ring 24 is connected to each other with swivel becket 22 and rotates with respect to set collar 20.In other words, when swivel becket 22 rotates, just motion and rotation simultaneously on optical axis direction of cam ring 24.

But straight-line guidance ring 26 is arranged at the inner radial of cam ring 24, so that make it to rotate can move along optical axis direction by being connected on the cam ring 24.Especially, three radially outwardly directed nose sections 2602 are arranged on the rear end of straight-line guidance ring 26 so that separate on its circumferencial direction.In addition, this three nose sections 2602 extend by the rear portion of cam ring 24 and with situation that the straight-line guidance groove 2008 of set collar 20 engages under, cam ring 24 is just with respect to set collar 20 rotations.Like this, these three nose sections 2602 just move along the straight-line guidance groove 2006 of set collar 20.Therefore, guide ring 26 be connected with cam ring 24 and only on optical axis direction the motion and do not rotate.

In addition, guide 2604 is arranged on the straight-line guidance ring 26 so that be parallel to optical axis direction from two positions that stride across the radial direction of guide ring 26 leading edges respectively and stretches out forward.

Second group of lens 16 keeps by the second arrangement of mirrors frame 1602.Second group of lens 16 placed on the interior week of cam ring 24.Guide section 26, guide rail 1605 and three cam pins 1606 are arranged on the outer surface of the second arrangement of mirrors frame 1602, wherein guide section 16 is positioned at two positions, these two positions stride across radial direction so that be parallel to that optical axis direction extends and by two guides, 2604 guiding of straight-line guidance ring 26, guide rail 1605 is positioned at two positions, these two positions stride across radial direction so that being parallel to optical axis direction extends and stretch out forward, and cam pin 1606 engages with the cam path 2404 of cam ring 24.

In addition, at guide section 1604 by under guide 2604 guiding and three cam pins 1606 and the situation that the cam path 2404 of cam ring 24 engages, cam ring 24 just rotates, thereby makes second group of lens 16 only move on optical axis direction and do not rotate along being arranged at cam curve in the cam path 2404.

The second arrangement of mirrors frame 1602 is provided with second group of light shielding plate 1608, and it is used for shielding the parasitic light of lens barrel 10 and stops parasitic light to enter imaging device 116.

Second group of light shielding plate 1608 is connected on the second arrangement of mirrors frame 1602 so that around in the upwardly extending axis swing in side that is parallel to perpendicular to the plane of optical axis.

Under the situation that lens barrel 10 stretches out, the promotion by utilize promoting the member (not shown) is so that near the detent (not shown) that is arranged on the second arrangement of mirrors frame 1602, and second group of light shielding plate 1608 just is placed on and is used on the screening-off position of shielded from light.Become the process of holding state from stretching out state at lens barrel 10, just make the front portion of second group of light shielding plate 1608 near the 3rd group of lens movement mechanism 28.Like this, second group of light shielding plate 1608 just withdrawn from the screening-off position swing and from the front portion of the 3rd group of lens movement mechanism 28.Therefore, the second group of light shielding plate 1608 and the second arrangement of mirrors frame 1602 can be positioned over comparison near near the pedestal 12.This just helps reducing the space on optical axis direction, is at lens barrel 10 that this space is occupied by the second arrangement of mirrors frame 1602 under the situation of holding state.

In addition, automatic exposure unit 1610 and flexible substrate 1612 (will be described after a while) also are arranged on the second arrangement of mirrors frame 1602.

First group of lens 14 keeps by the first arrangement of mirrors frame 1402 (corresponding with second lens barrel described in the claim).The first arrangement of mirrors frame 1402 placed on the interior week and second mirror holder, 1602 front portions of cam ring 24.The interior perimeter surface of the first arrangement of mirrors frame 1602 has the gathering sill (not shown) that is formed at two positions, these two positions stride across radial direction so that be parallel to that optical axis direction extends and by two guide rails, 1605 guiding of the second arrangement of mirrors frame 1602, also have three cam pins 1406 that engage with the cam path 2404 of cam ring 24 on perimeter surface in this.

In addition, at gathering sill by under guide rail 1605 guiding and three cam pins 1406 and the situation that the cam path 2402 of cam ring 24 engages, cam ring 24 just rotates, thereby makes the group lens mount 14 of winning only move on optical axis direction and do not rotate along being arranged at cam curve in the cam path 2402.

And the metal accessory plate 32 that is used to be provided with lens barrel 10 outward appearances is connected in the front portion of the first arrangement of mirrors frame 14.The metal subring 34 that is used to be provided with the lens barrel outward appearance is connected in the front portion of cam ring 24.

Light shield ring 36 is used to prevent that dust and parasitic light from entering the gap between week in the periphery of the first arrangement of mirrors frame 14 and cam ring 24, and it is positioned in the periphery of the first arrangement of mirrors frame 14 and the cam ring 24 in the gap between weeks.This light shield ring 36 is connected on the first arrangement of mirrors frame 14, and places under the situation that has the gap between rosette 34 and the cam ring 24.

Light shield ring 38 is used to prevent that dust and parasitic light from entering the gap between the interior week of the periphery of cam ring 24 and set collar 20, and it is positioned in the gap between interior week of the periphery of cam ring 24 and set collar 20.This light shield ring 38 be connected on the periphery of cam ring 24 and with interior all Elastic Contact of set collar 20.

In addition, optical finder 40 comprises movable lens and is connected on the pedestal 12.Movable lens are connected on the cam path 2202 of swivel becket 22 by the cam pin (not shown).Movable lens move on optical axis direction with swivel becket 22, thereby carry out the convergent-divergent in the visual field.

Next, hereinafter will be described in detail for automatic exposure unit 1610 and flexible substrate 1612.

Fig. 8 shows the skeleton view of schematic configuration separately of the first arrangement of mirrors frame 1402 and the second arrangement of mirrors frame 1602.Fig. 9 is the longitudinal sectional view of lens barrel 10.Figure 10 is the explanatory separately of automatic exposure equipment 1610 and flexible substrate 1612.By the way, for the ease of drawing, Fig. 8 draws by the shape of having simplified its each part.

As shown in Fig. 8 and 9, automatic exposure unit 1610 has the shell 1620 that is connected in the second arrangement of mirrors frame, 1602 front portions.Being used for opening the tripper and being used for of catching the light path of optical system 104 with closing image regulates the light intensity governor motion of the light intensity of picture catching optical system 104 light paths and is placed in shell 1620.Automatic exposure unit 1610 comprises tripper and light intensity governor motion.

In this example of the preferred embodiment of the present invention, tripper has constituted the operating unit described in the claim, and the light intensity governor motion has also constituted the operating unit described in the claim.

Tripper and light intensity governor motion are configured to be convenient to according to operating from the control signal of circuit 130 (referring to Figure 11) supply, and circuit 130 is included in the shell 102 of imaging device 100 by flexible substrate 1612.Known up to now various mechanisms, for example combination of electric actuator such as motor and mechanical opening/closing mechanism and can be used as tripper and light intensity governor motion as the device of the liquid-crystal apparatus of light intensity governor motion.

Flexible substrate 1612 is made of flexible material.As shown in Figure 9, the distolateral 1612A1 of flexible substrate 1612 and 1612B1 are connected on the shell 1620 of automatic exposure unit 1610 by adhesive bonding method.The interlude of flexible substrate 1612 is arranged such that the rear portion of its sweep by cam ring 24 extended and the linkage section 2010 by set collar 20 keeps, and its other end 1612A2 and 1612B2 extend and lead to the rear portion from the opening 1202 of pedestal 12 along set collar 20.

In addition, the generation type of flexible substrate 1612 makes follows the rotation of swivel becket 22 and moves on the optical axis direction separately of the second arrangement of mirrors frame 1602 and straight-line guidance ring 26, so that move simultaneously, but do not make win the interconnection section 1612A and the second interconnection section 1612B distortion at the sweep continually varying.

More specifically, as shown in Figure 10, flexible substrate 1612 has the first interconnection section 1612A and the second interconnection section 1612B.In this example of the preferred embodiment of the present invention, the first interconnection section 1612A and the second interconnection section 1612B are formed on the independent substrate.

In this example of the preferred embodiment of the present invention, the first interconnection section 1612A has many leads, one end 1612A1 of every lead is electrically connected on corresponding of a plurality of links of automatic exposure unit 1612, and the other end 1612B2 of every lead be electrically connected on be arranged at lens barrel 10 outside with shell 102 in the position on so that have earth potential.In this example of the preferred embodiment of the present invention, the end 1612B of the second interconnection section 1612B forms as graph segments so that have presumptive area and wait and expose, thereby the surface of the second interconnection section 1612B is for can be electrically connected the formula surface.

As shown in Fig. 8 and 9, two metal coil springs 15 are arranged in the stretched condition between the first arrangement of mirrors frame 1402 and the second arrangement of mirrors frame 1602.

Two volute springs 15 are parallel to optical axis extending along fore-and-aft direction between the first arrangement of mirrors frame 1402 and the second arrangement of mirrors frame 1602 in the first arrangement of mirrors frame 1402 and cam ring 24, and along making win arrangement of mirrors frame 1402 and the second arrangement of mirrors frame 1602 direction close to each other promote the first arrangement of mirrors frame 1402 and the second arrangement of mirrors frame 1602.Therefore, two volute springs 15 promote the second arrangement of mirrors frame 1602 forward.More specifically, each volute spring 15 is grabbed respectively to be stuck in spring and to grab card section 1410 and spring and grab in the card sections 1616, spring is grabbed card section 1410 and is arranged at the front end of the first arrangement of mirrors frame 1402 so that stretch out thus, and spring is grabbed card sections 1616 and is arranged on the front end and periphery of the second arrangement of mirrors frame 1602.

Gap between gap between cam pin 1406 and the cam path 2402 and cam pin 1606 and the cam path 2404 can be absorbed by the thrust of volute spring 15.

In this example of the preferred embodiment of the present invention, the front end 1502 of one of two volute springs 15 enters in the Elastic Contact with accessory plate 32 rear surfaces.Like this, accessory plate 32 just can conduct electricity to one of volute spring 15.

In addition, the rear end of one of volute spring 15 is electrically connected on the end 1612B1 of the second interconnection section 1612B of flexible substrate 1612.

Particularly, in this example of the preferred embodiment of the present invention, the current-carrying plate 31 that is made of the conductive material as metal and so on is arranged at the rear end of the outer surface of the second arrangement of mirrors frame 1602, shown in Fig. 5 and 8.It is integrally formed with this current-carrying plate 31 that above-mentioned spring is grabbed card section 1616.Like this, one of volute spring 15 just is electrically connected on the current-carrying plate 31.

And current-carrying plate 31 is electrically connected on the end 1612B1 of the second interconnection section 1612B of flexible circuit board 1612.

Therefore, accessory plate 32 just is electrically connected on the earthing position in the shell 102 by the path that comprises volute spring 15, current-carrying plate 31 and the second interconnection section 1612B.

Next, will be described, static discharge or static charge will wherein take place on the lens barrel 10 of the imaging device 100 of this example according to the preferred embodiment of the invention following situation.

Figure 11 shows the explanatory of the electrical connection in the imaging device 100.In the drawings, dotted line is represented conductive path.Solid arrow is represented the stream of the electric current that static discharge and static charge are produced.

As shown in figure 11, in automatic exposure equipment 1612, tripper and light intensity governor motion are by means of operating to its supply control signal from circuit 130 by the first interconnection section 1612.

In addition, as shown in Fig. 9 and 11, during lens barrel 10 is in the state of stretching out, when at an end of lens barrel 10 promptly when near accessory plate 32 or its discharge or electric charge taking place, electric current just flows therein, and this electric current is caused on the earthing position of shell 102 by the path that comprises accessory plate 32, volute spring 15, current-carrying plate 31 and the second interconnection section 1612B.

Therefore, electric current does not flow in circuit 130 and imaging device 1616.Like this, just can guarantee to prevent the operation of the electronic unit of the operation of circuit 130 and imaging device 1616 or forming circuit 130 and imaging device 1616 is caused negative effect.

In addition, even between lens barrel 10 and flexible substrate 1612, exist under the situation of narrow gap, can guarantee that also electrostatic current is directed on the earthing position of shell 102, thereby guarantee to reduce negative effect.Like this, this example of the preferred embodiment of the present invention just helps the miniaturization of lens barrel 10 and imaging device 100.

Correspondingly, in this example of the preferred embodiment of the present invention, place the earthing position conduction of the volute spring 15 of lens barrel 10 to shell 102.Like this, be directed to the volute spring 15 that is in ground level owing to produce the path that the caused electric current of static just extends to its rear portion by the front portion from lens barrel 10 midway on the lens barrel 10.Therefore, this example of the preferred embodiment of the present invention helps guaranteeing to prevent that electric current is transferred on the imaging device 116 that is connected in lens barrel 10 rear portions.

Figure 12 shows a comparative example and has constituted the explanatory that the electrical connection in the imaging device 100 is shown, and wherein imaging device 100 is not arranged at the interconnection of second on the flexible substrate 1612 section 1612B.

In this case, the electrostatic current that is produced in the lens barrel 10 also enters circuit 130 by first an interconnection section 1612A just by in its transmission and the inflow imaging device 116.This just may cause negative effect to the operation to the electronic unit of the operation of circuit 130 and imaging device 1616 or forming circuit 130 and imaging device 1616.

In addition, in this example of the preferred embodiment of the present invention, metal accessory plate 32 is connected in the front portion 1505 of the first arrangement of mirrors frame.In addition, the front end of volute spring 15 is electrically connected on the accessory plate 32.Yet, need not many speeches, even place situation near accessory plate 32 places at helical spring front end, electrostatic current also may be caused on the volute spring 15 from its front end.By the way, having set up the volute spring front end to the situation of the electrical connection of accessory plate 32, be similar to this embodiment, it more helps guaranteeing electrostatic current is caused volute spring 15.

In addition, although the situation that metal accessory plate 32 is connected in the first arrangement of mirrors frame, 1404 front portions has been described in the above description of this example of the preferred embodiment of the present invention, need not many speeches, the present invention can also be applied to not have in the lens barrel of metal accessory plate 32.

And, although the description of this example of the preferred embodiment of the present invention is described tripper and light intensity governor motion as the operating unit example that is used to carry out the associated picture capture operation, but operating unit is not limited to tripper and light intensity governor motion, because the formation of operating unit will be according to being used to realize that the required various operations of function of imaging device determine.

By the way, although the description of this example of the preferred embodiment of the present invention is described the digital camera as imaging device, the present invention also can be used for various imaging devices, as video camera.Therefore, should be appreciated that the present invention is not limited to the foregoing description.Obviously, those skilled in the art as can be seen, can make multiple change, modification, combination, branch combination, change or the like to the present invention according to design needs and other factor, as long as still in accompanying Claim and the determined scope of equivalents thereof.

Claims

1. A lens barrel comprising a base and a telescoping barrel capable of retracting into and extending from the base, the barrel including a lens constituting an image capturing optical system for introducing an image of an object, for holding The frame of the lens, and the operating unit arranged in the frame for performing operations related to image capture according to the supplied control signal, the lens barrel includes:

a flexible substrate disposed inside the lens barrel for supplying a control signal to the operation unit from a circuit disposed outside the barrel;

Among them, flexible substrates include:

a first interconnect segment to which the control signal is supplied; and

The second interconnection segment is provided separately from the first interconnection segment and has one end connected to the mirror frame and the other end electrically connected to the ground potential.

2. The lens barrel according to claim 1, wherein the lens holder is movably disposed in the direction of the optical axis of the image capturing optical system.

3. The lens barrel according to claim 1, wherein

The mirror frame has a light intensity adjusting mechanism for adjusting the light intensity in the optical path of the image capturing optical system; and

The operating unit includes a light intensity adjustment mechanism.

4. The lens barrel according to claim 1, wherein:

the frame has a shutter mechanism for opening and closing the light path of the image capture optical system; and

The operating unit includes a shutter mechanism.

5. The lens barrel according to claim 1, wherein:

The cartridge includes a first cartridge adapted to retract into and protrude from the base and a second cartridge adapted to retract into and protrude from the first cartridge; wherein

The mirror frame is movably arranged in the first barrel in the direction of the optical axis;

a metal coil spring is provided extending in the front-rear direction between the end of the second barrel and the frame in the first barrel and the second barrel, and pushing the frame forward; and

The rear end of the coil spring is electrically connected to the second interconnection segment.

6. The lens barrel according to claim 1, wherein

The barrel includes a first sub-tube adapted to retract into the base and protrude from the base, and a second sub-tube adapted to retract into the first sub-tube and protrude from the first sub-tube;

The provided metal auxiliary plate is connected to one end of the second sub-tube, and has an opening in the center of the optical path constituting the image capturing optical system;

The mirror frame is movably arranged in the first sub-tube in the direction of the optical axis;

7. The lens barrel according to claim 6, wherein a front end of the coil spring is in elastic contact with the auxiliary plate.

8. An imaging device comprising a base and a telescoping barrel capable of retracting into and extending from the base, the barrel including a lens forming an image capture optical system for introducing an optical image of an object; An imaging device for imaging an object; a frame for holding a lens; and an operation unit provided in the frame for performing operations related to image capture according to a supplied control signal, the imaging device includes:

a flexible substrate disposed inside the barrel for providing control signals to the operating unit from a circuit disposed outside the barrel;

Among them, flexible substrates include:

a first interconnect segment to which the control signal is supplied; and

9. The imaging apparatus according to claim 8, wherein the mirror holder is movably placed in the direction of the optical axis of the image capturing optical system.

10. The imaging device according to claim 8, wherein:

The operating unit includes a light intensity adjustment mechanism.

11. The imaging device according to claim 8, wherein:

The operating unit includes a shutter mechanism.

12. The imaging device according to claim 8, wherein:

providing a metal coil spring extending in the front-rear direction between the end of the second barrel and the frame in the first barrel and the second barrel, and pushing the frame forward; and

13. The imaging device according to claim 8, wherein:

14. The image forming apparatus according to claim 13, wherein a front end of the coil spring is in elastic contact with the auxiliary plate.